package com.dm.cloud.utils.mq.rabbitmq;

import com.dm.cloud.utils.minio.MinioProperties;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;

@Slf4j
@Configuration
@ConditionalOnProperty(prefix = "custom.mq.rabbitmq", name = "enable", havingValue = "true")
@EnableConfigurationProperties(RabbitProperties.class)
public class RabbitPropertiesConfiguration {
    /**Broker:它提供一种传输服务,它的角色就是维护一条从生产者到消费者的路线，保证数据能按照指定的方式进行传输,
     * Exchange：消息交换机,它指定消息按什么规则,路由到哪个队列。
     * Queue:消息的载体,每个消息都会被投到一个或多个队列。
     * Binding:绑定，它的作用就是把exchange和queue按照路由规则绑定起来.
     * Routing Key:路由关键字,exchange根据这个关键字进行消息投递。
     * vhost:虚拟主机,一个broker里可以有多个vhost，用作不同用户的权限分离。
     * Producer:消息生产者,就是投递消息的程序.
     * Consumer:消息消费者,就是接受消息的程序.
     * Channel:消息通道,在客户端的每个连接里,可建立多个channel.
     * */

    private static RabbitProperties properties;

    @Autowired
    public void setProperties(RabbitProperties properties) {
        this.properties = properties;
    }

    @Bean
    public ConnectionFactory connectionFactory() {
            CachingConnectionFactory connectionFactory = new CachingConnectionFactory(properties.getHost(),properties.getPort());
            connectionFactory.setUsername(properties.getUsername());
            connectionFactory.setPassword(properties.getPassword());
            connectionFactory.setVirtualHost("/");
            connectionFactory.setPublisherConfirms(true);
            return connectionFactory;
    }

    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)    //必须是prototype类型
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(connectionFactory());
        return template;
    }

    /**
     * 针对消费者配置
     * 1. 设置交换机类型
     * 2. 将队列绑定到交换机
     * FanoutExchange: 将消息分发到所有的绑定队列，无routingkey的概念
     * HeadersExchange ：通过添加属性key-value匹配
     * DirectExchange:按照routingkey分发到指定队列
     * TopicExchange:多关键字匹配
     **/
    @Bean
    public DirectExchange defaultExchange() {
        return new DirectExchange(RabbitMQExchanges.EXCHANGE_A.getExchange());
    }

    @Bean
    public TopicExchange topicExchange() {
        return new TopicExchange(RabbitMQExchanges.EXCHANGE_B.getExchange());
    }

    @Bean
    public FanoutExchange fanoutExchange() {
        return new FanoutExchange(RabbitMQExchanges.EXCHANGE_C.getExchange());
    }

    /**
     * 获取队列A
     * @return
     **/
    @Bean
    public Queue queueA() {
        return new Queue(RabbitMQQueues.QUEUE_A.getQueue(), true); //队列持久
    }

    @Bean
    public Queue queueB() {
        return new Queue(RabbitMQQueues.QUEUE_B.getQueue(), true); //队列持久
    }

    @Bean
    public Queue queueC() {
        return new Queue(RabbitMQQueues.QUEUE_C.getQueue(), true); //队列持久
    }

    /**
     * 绑定队列
     * @return
     */
    @Bean
    public Binding binding() {
        return BindingBuilder.bind(queueA()).to(defaultExchange()).with(RabbitMQRoutingKeys.ROUTINGKEY_A.getRoutingKey());
    }

    @Bean
    public Binding bindingB(){
        return BindingBuilder.bind(queueB()).to(topicExchange()).with(RabbitMQRoutingKeys.ROUTINGKEY_B.getRoutingKey());
    }

    @Bean
    public Binding bindingC(){
        return BindingBuilder.bind(queueC()).to(fanoutExchange());
    }
}
